Meetings typically consume 20-30% of a developer's time. I don't see how AI can help there. Something like this might be possible if you're a lonely hired gun, but I doubt it. Even three projects with more than four team members would be a nightmare, in my opinion.
Even if he does work that many jobs, it's too specific to be interesting in general. He checks email twice a day and rarely has meetings.
Most people couldn't find a single job with that limited team interaction, let alone ten.